Question

CAN YOU PLEASE ANSWER ALL QUESTIONS AND PLEASE ANSWER AS SOON AS POSSIBLE

1. The processing, where different kinds of information are processed in different brain structures, is called:

a. Stream segregation

b. Serial processing

c. Distributed processing

d. Parallel processing

2. In vision, what does dark adaptation mean?

a. Decrease in color discrimination that occurs after a period in the dark

b. The increased sensitivity of the eye that occurs when being in the dark for a long time

c. Decrease in sensitivity of the eye after light exposure

d. Increase in sensitivity of the eye after exposure to red light

3. What is the threshold of hearing?

a. The smallest amount of sound that a person can detect

b. The sound that a person detectsin a certain percentage (often 50%) of identical presentations

c. The smallest amount of sound a person can detect in two consecutive presentations

d. None of the above

4. True or false: Sound always arrives at the same time in each ear.

Answer 1

1. Parallel processing

When different parts performs differently, it is called as parallel processing. For example, if we will consider the computer as the brain and different CPUs attached to it as its parts, then when different CPUs are used by the computer, it is called as parallel processing. The brain also perform many complex task, hence the different parts of the brain performs differently so as to perform with its full potential and this is known as parallel processing.

2.

b. The increased sensitivity of the eye that occurs when being in the dark for a long time.

When a person is kept in the dark, the size of the pupil decreases allowing small amount of light to enter the eye. But when we expose that person suddenly to the light, the size of the pupil can't increase rapidly so as to allow more amount of light to enter the eye. This adaptation of the eye to respond to high amount of light, when they are suddenly exposed to light after being in dark environment is known as dark adaptation. The dark adaptation is generally associated with the ability of the pupil of eye for sudden increase in its diameter and also the secretion of some proteins like Rhodopsins in the retina of the eye.

3.

a. The smallest amount of sound that a person can detect.

The amount of sound below which a person is unable to detect the sound for hearing is known as threshold of hearing. Hence, it can be otherwise stated as the smallest amount of sound that a person can detect. It is generally describe in Decibel.

4. False

When sound waves generated by the source reaches our ear, we can hear the sound.

As the distance between both the ear differs from a source, so the sound wave don't arrives to the ears at the same time and we can't hear simultaneously in both ear also.

But the sound can arrive our hear at the same time only when, the sound wave will be produced by the source only in front of the individual and at right angle to both the ears or at the central position with respect to both the ears.

If a sound is produced at the left side of our body, than the sound wave will reach to our left ear sometimes earlier than the right ear and vice - versa